//
/*
class Baase {
    Baase() {
        System.out.print("Base");
    }
}
class Base1{
    public Base1(String s){
        System.out.print("B");
    }
}

public class chap12_3 extends Base1 {

    public chap12_3(String s) {
        System.out.print("D");
    }

    public static void main(String[] args) {
        new chap12_3("c");
    }
}



public class chap12_3 extends Base {

    public static void main( String[] args ) {
        new chap12_3();//1
        //调用父类无参的构造方法
        new Baase();//2
    }
}






*/
